Certainly "Eastern Orthodox" is a mistake. They meant "Eastern Catholic." I know that one of the cardinals dressed in black was Lubomir Cardinal Husar, Archbishop of the see of Lviv (Ukraine). I'm not certain who the other was. Might it have been Marian Cardinal Jaworski (also from Lviv)? Or maybe Ignace Moussa I Cardinal Daoud (Prefect of the Congregation of the Oriental Churches)? Maybe someone else knows. I'm not an expert in this field!